Exodus 26:25-27

25There shall be eight boards with their 1sockets of silver, sixteen 2sockets; two 3sockets under one board and two 4sockets under another board.

26“Then you shall make 5bars of acacia wood, five for the boards of one side of the tabernacle, 27and five bars for the boards of the 6other side of the tabernacle, and five bars for the boards of the side of the tabernacle for the 7rear side to the west.